National Institutes of Health
NPI 1326814492 · Hematology & Oncology Physician · Bethesda, MD
National Institutes of Health is a Hematology & Oncology Physician organization in Bethesda, MD (NPI 1326814492).
Provider details
- NPI number
- 1326814492
- Entity type
- Organization
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Mary Grecco, Nurse Practitioner(301) 273-8617
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
2 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2023-11-30
- Last updated
- 2023-11-30
- Certified
- 2023-11-30
Frequently asked questions
- What is National Institutes of Health's NPI number?
- National Institutes of Health's National Provider Identifier (NPI) is 1326814492, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is National Institutes of Health?
- National Institutes of Health is classified in the NPPES registry as Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is National Institutes of Health located?
- National Institutes of Health's practice location on file with NPPES is 10 Center Dr # 5-5485, Bethesda, MD 20892-0004.
- What is National Institutes of Health's phone number?
- The practice phone number listed in the NPPES registry for National Institutes of Health is (301) 273-8617.
- Who is the authorized official for National Institutes of Health?
- The authorized official listed on National Institutes of Health's NPPES record is Mary Grecco, Nurse Practitioner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is National Institutes of Health's NPI active?
- Yes — National Institutes of Health's NPI (1326814492) is active in the NPPES registry as of the last update on 2023-11-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.